---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Fri 04/22/05:7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:15 AM - Re: Air Switch (RoddyEuropa@aol.com) 2. 08:02 AM - Re: Was-Air Pressure Switch (EMAproducts@aol.com) 3. 10:36 AM - Re: gas mixing (MICHAEL PARKIN) 4. 11:17 AM - Re: gas mixing (Garry) 5. 11:51 AM - AW: Two points (Europa (Alfred Buess)) 6. 02:34 PM - Re: Air Switch (Jeremy Davey) 7. 02:48 PM - Re: gas mixing (Jeremy Davey) ________________________________ Message 1 _____________________________________ Time: 12:15:34 AM PST US From: RoddyEuropa@aol.com Subject: Re: Europa-List: Air Switch --> Europa-List message posted by: RoddyEuropa@aol.com A word of warning to those in the UK. The PFA wouldn't allow me to put such a switch in the same line as the pitot in case it interferred with the ASI (if the diaphram in the switch broke). Said I had to put in a separate pitot head. Roddy Kesterton Europa 220 In a message dated 21/04/2005 15:57:35 GMT Daylight Time, EuropaFlyer_3@msn.com writes: --> Europa-List message posted by: "Jeremy Davey" Troy, What about the ones used in the Factory stall warner - that's very accurate and sensitive. You may need one that worked in the opposite sense, but I'm sure that'll exist, too. ________________________________ Message 2 _____________________________________ Time: 08:02:48 AM PST US From: EMAproducts@aol.com Subject: Europa-List: Re: Was-Air Pressure Switch --> Europa-List message posted by: EMAproducts@aol.com In a message dated 4/22/05 2:52:18 AM Pacific Daylight Time, europa-list-digest@matronics.com writes: Subject: Europa-List: Air Switch Why not use an AOA for that purpose? It serves many different functions along with correcting for all weights and conditions. Several of our system are flying on Europas. The pressure differences between 55 Kt and 75 Kt are extremely small, we are working with pressure transducers on a Data Acquisition systems for test flying prototype aircraft. Elbie RiteAngle ~The "Stand Alone AOA System" for Your Safety Outstanding Customer Service is our Motto If you like it let others know, If not let me know! EM aviation, LLC Elbie Mendenhall, President 13411 NE Prairie Rd Brush Prairie, WA 98606 360-260-0772 Phone & Fax www.riteangle.com ________________________________ Message 3 _____________________________________ Time: 10:36:20 AM PST US From: "MICHAEL PARKIN" Subject: Re: Europa-List: gas mixing --> Europa-List message posted by: "MICHAEL PARKIN" OK, I am now officially confused. Mogas, Avgas, RON, MON, oil changes at 50hrs or 25hrs with Avgas? According to my Rotax maintenance manual, oil changes are required at 100hr intervals. What am I missing. regards, Mike ----- Original Message ----- From: "R Holder" Subject: Re: Europa-List: gas mixing > --> Europa-List message posted by: R Holder > > kenneth b. carpenter wrote: >> --> Europa-List message posted by: "kenneth b. >> carpenter" >> >> Has anyone explored the issue of mixing 50/50 87 >> octane auto gas with 100 LL to get 93 octane gas for >> 914T engines? I think 912S engines also need 93 octane >> gas. Sounds like it would be better for the engine >> than 100LL alone. Ken Carpenter N 9XS 914T > > Why not just use Auto gas ! > > If you are carting auto gas into your hanger to mix it > with Avgas, why not just use auto gas ? > > 912 912S and 914 all run on Mogas (auto gas) and the oil > needs to be changed every 25 hours if more than 30% Avgas > is used. The oil changes are at 50 hour intervals if you > use Mogas. > > Mogas is also cheaper ($5 a US gal here in England) > compared with over $7 a US gal for AVGAS. > > Richard Holder > Europa TriGear G-OWWW High Cross > > > ________________________________ Message 4 _____________________________________ Time: 11:17:23 AM PST US From: "Garry" Subject: Re: Europa-List: gas mixing --> Europa-List message posted by: "Garry" Mike, my practical "in a nutshell" advise would be to use the highest octane rated Mogas you can buy, which is usually 93 octane. If you can't get Mogas, then use 100LL. This advise goes for any Rotax engine, i.e.: 912, 912S or 914. As to oil and filter changes you can safely go to 100 hours if you use exclusively Mogas, but since it's cheap I usually change mine around 50 hours. If you use 100LL exclusively I'd change my oil closer to every 50 hours since the lead in the gas will find it's way into the oil. This advise is based on 6 years of flying with my trigear 914. A word of caution to 914 users. The exclusive use of 100LL fuel WILL sooner or later cause "sticking" of the turbo wastegate butterfly valve. When this happens, you will not have a flyable airplane. The solution is to regularly spray the wastegate valve with a penetrating spray. In the US I have found a product called "Blaster" works miracles. Also, you can add TCP additive to your fuel, but it's hard to find. Exclusive use of 100LL also will cause your fuel filters to clog quicker, and your spark plugs to foul quicker. Regards, Garry Stout N4220S, A60, Trigear, 450 hours. ----- Original Message ----- From: "MICHAEL PARKIN" Subject: Re: Europa-List: gas mixing > --> Europa-List message posted by: "MICHAEL PARKIN" > > > OK, I am now officially confused. Mogas, Avgas, RON, MON, oil changes at > 50hrs or 25hrs with Avgas? According to my Rotax maintenance manual, oil > changes are required at 100hr intervals. What am I missing. > > regards, > > Mike > > ----- Original Message ----- > From: "R Holder" > To: > Subject: Re: Europa-List: gas mixing > > >> --> Europa-List message posted by: R Holder >> >> kenneth b. carpenter wrote: >>> --> Europa-List message posted by: "kenneth b. >>> carpenter" >>> >>> Has anyone explored the issue of mixing 50/50 87 >>> octane auto gas with 100 LL to get 93 octane gas for >>> 914T engines? I think 912S engines also need 93 octane >>> gas. Sounds like it would be better for the engine >>> than 100LL alone. Ken Carpenter N 9XS 914T >> >> Why not just use Auto gas ! >> >> If you are carting auto gas into your hanger to mix it >> with Avgas, why not just use auto gas ? >> >> 912 912S and 914 all run on Mogas (auto gas) and the oil >> needs to be changed every 25 hours if more than 30% Avgas >> is used. The oil changes are at 50 hour intervals if you >> use Mogas. >> >> Mogas is also cheaper ($5 a US gal here in England) >> compared with over $7 a US gal for AVGAS. >> >> Richard Holder >> Europa TriGear G-OWWW High Cross >> >> >> > > > ________________________________ Message 5 _____________________________________ Time: 11:51:10 AM PST US From: "Europa (Alfred Buess)" Subject: AW: Europa-List: Two points --> Europa-List message posted by: "Europa (Alfred Buess)" Yesterday I was talking with a specialist of the German Rotax dealer Franz about their oil and coolant thermostats. Their experience with Rotax 912 engines operated in the nothern parts of Europe: It often lasts a long time until the oil temperature is at a level permitting the application of full take-off power, and a lot of engines are operated at oil temperature levels permanently too low - with all the bad side effects. He highly recommends the oil thermostat. Only if the coolant temperatures - despite an installed oil thermostat - are always too low, a coolant thermostat is recommended. Their oil thermostat is built and installed in a way that it stays open (or opens up) if it is defective, which means the oil is going "the long way" through the radiator. Another detail he mentioned: If you buy a new 912S, ALWAYS buy the heavy duty starter, the price difference is small compared to the hassle you will probably avoid. Alfred Alfred Buess Laenggasse 81, CH-3052 Zollikofen, Switzerland Tel.: +41 (0)31 911 63 32, Fax: +41 (0)31 911 56 32 E-Mail: ykibuess@bluewin.ch Europa XS #097, Monowheel, Foam shortwing, Rotax 912S, Airmaster 332 CS -----Ursprngliche Nachricht----- Von: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] Im Auftrag von Pete Lawless Gesendet: Donnerstag, 21. April 2005 23:09 An: europa-list@matronics.com Betreff: RE: Europa-List: Two points --> Europa-List message posted by: "Pete Lawless" Hi Nigel The thing with a lazy thermostat is you know it is not working properly well before it becomes a real problem. The other down side for us old chaps with bad memory is remembering to adjust the flap that controls the oil temperature! It is something else to remember, I know eventually it would be left on when it should be off or vis versa. It is a bit like carb heat controls that we all know have to be operated but aeroplanes loose engine power regularly because of carb icing. The thermostat just gets on with it and does not require me to do anything. I totally agree with you about mod approval, but I still know which I would prefer. There are aeroplanes (not Europas as far as I know) out there with both oil and water thermostats which are, I believe, approved mods. Regards Pete ________________________________ Message 6 _____________________________________ Time: 02:34:28 PM PST US From: "Jeremy Davey" Subject: RE: Europa-List: Air Switch --> Europa-List message posted by: "Jeremy Davey" Very odd... I have a mod 'approved subject to flight test' for fitting an AoA that taps into the pitot-static system. I might have a chat with Francis on that one :-) Cheers, Jeremy Jeremy Davey Europa Monowheel 537M G-EZZA Europa Club Vice-Chairman, Webmaster, PFA NC Representative PFA EC Member If you can keep your head when all about you are losing theirs, then it is possible you haven't grasped the severity of the situation. Tail done Standard XS wings with mods underway CM installed in fuse (with airbrakes fittings) 1380 build hours to date Intended fit: Rotax 914 turbo, Airmaster CS fully-feathering prop Lots of lights, buttons, switches, gizmos, and alarms -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of RoddyEuropa@aol.com Subject: Re: Europa-List: Air Switch --> Europa-List message posted by: RoddyEuropa@aol.com A word of warning to those in the UK. The PFA wouldn't allow me to put such a switch in the same line as the pitot in case it interferred with the ASI (if the diaphram in the switch broke). Said I had to put in a separate pitot head. Roddy Kesterton Europa 220 In a message dated 21/04/2005 15:57:35 GMT Daylight Time, EuropaFlyer_3@msn.com writes: --> Europa-List message posted by: "Jeremy Davey" Troy, What about the ones used in the Factory stall warner - that's very accurate and sensitive. You may need one that worked in the opposite sense, but I'm sure that'll exist, too. ________________________________ Message 7 _____________________________________ Time: 02:48:02 PM PST US From: "Jeremy Davey" Subject: RE: Europa-List: gas mixing --> Europa-List message posted by: "Jeremy Davey" I'm assuming you mean 93MON as I think that's the highest-rated fuel normally available at the pumps in the US. Can you confirm? Over here in the UK where we measure in RON, we have 95-octane Ornery Unleaded and 97ish-octane Super Unleaded (BP Ultimate is 97, Total Super is 98, Esso Supreme is 97 to 98, Shell Optimax is 97.6, Sainsbugs own-brand is 97, etc.). I though the line was that we should us ordinary unleaded, as super is more prone to vapour lock. Can someone in the know comment? It would be interesting to see how Optimax fares on that as it is actually to the British Standard for ordinary, but of a higher octane rating, while the other are to the BS for super - I forget the exact BS numbers (5050? 9090?). (In case anyone is wondering why I'm so familiar with the fuel standards of the different suppliers in the UK, it's because my car is designed to run on a diet of super and is extremely sensitive to the fuel I feed it! The right fuel = more grins! :-)) Regards, Jeremy Jeremy Davey Europa Monowheel 537M G-EZZA Europa Club Vice-Chairman, Webmaster, PFA NC Representative PFA EC Member If you can keep your head when all about you are losing theirs, then it is possible you haven't grasped the severity of the situation. Tail done Standard XS wings with mods underway CM installed in fuse (with airbrakes fittings) 1380 build hours to date Intended fit: Rotax 914 turbo, Airmaster CS fully-feathering prop Lots of lights, buttons, switches, gizmos, and alarms -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Garry Subject: Re: Europa-List: gas mixing --> Europa-List message posted by: "Garry" Mike, my practical "in a nutshell" advise would be to use the highest octane rated Mogas you can buy, which is usually 93 octane. If you can't get Mogas, then use 100LL. This advise goes for any Rotax engine, i.e.: 912, 912S or 914. As to oil and filter changes you can safely go to 100 hours if you use exclusively Mogas, but since it's cheap I usually change mine around 50 hours. If you use 100LL exclusively I'd change my oil closer to every 50 hours since the lead in the gas will find it's way into the oil. This advise is based on 6 years of flying with my trigear 914. A word of caution to 914 users. The exclusive use of 100LL fuel WILL sooner or later cause "sticking" of the turbo wastegate butterfly valve. When this happens, you will not have a flyable airplane. The solution is to regularly spray the wastegate valve with a penetrating spray. In the US I have found a product called "Blaster" works miracles. Also, you can add TCP additive to your fuel, but it's hard to find. Exclusive use of 100LL also will cause your fuel filters to clog quicker, and your spark plugs to foul quicker. Regards, Garry Stout N4220S, A60, Trigear, 450 hours. ----- Original Message ----- From: "MICHAEL PARKIN" Subject: Re: Europa-List: gas mixing > --> Europa-List message posted by: "MICHAEL PARKIN" > > > OK, I am now officially confused. Mogas, Avgas, RON, MON, oil changes at > 50hrs or 25hrs with Avgas? According to my Rotax maintenance manual, oil > changes are required at 100hr intervals. What am I missing. > > regards, > > Mike > > ----- Original Message ----- > From: "R Holder" > To: > Subject: Re: Europa-List: gas mixing > > >> --> Europa-List message posted by: R Holder >> >> kenneth b. carpenter wrote: >>> --> Europa-List message posted by: "kenneth b. >>> carpenter" >>> >>> Has anyone explored the issue of mixing 50/50 87 >>> octane auto gas with 100 LL to get 93 octane gas for >>> 914T engines? I think 912S engines also need 93 octane >>> gas. Sounds like it would be better for the engine >>> than 100LL alone. Ken Carpenter N 9XS 914T >> >> Why not just use Auto gas ! >> >> If you are carting auto gas into your hanger to mix it >> with Avgas, why not just use auto gas ? >> >> 912 912S and 914 all run on Mogas (auto gas) and the oil >> needs to be changed every 25 hours if more than 30% Avgas >> is used. The oil changes are at 50 hour intervals if you >> use Mogas. >> >> Mogas is also cheaper ($5 a US gal here in England) >> compared with over $7 a US gal for AVGAS. >> >> Richard Holder >> Europa TriGear G-OWWW High Cross >> >> >> > > >